diff --git a/CHANGELOG.md b/CHANGELOG.md
index aa6b581532d6..4c8dad693ee8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,7 +2,6 @@
 
 ### Features
 
-- `[docs]` Add step for fetching `backers.json` file in website setup docs ([#10631](https://github.com/facebook/jest/pull/10631))
 - `[jest-cli, jest-config]` Add support for the `jest.config.ts` configuration file ([#10564](https://github.com/facebook/jest/pull/10564))
 
 ### Fixes
@@ -11,6 +10,9 @@
 
 ### Chore & Maintenance
 
+- `[docs]` Add step for fetching `backers.json` file in website setup docs ([#10631](https://github.com/facebook/jest/pull/10631))
+- `[docs]` Add page detailing environment variables set by Jest ([#10630](https://github.com/facebook/jest/pull/10630))
+
 ### Performance
 
 ## 26.5.3
diff --git a/docs/EnvironmentVariables.md b/docs/EnvironmentVariables.md
new file mode 100644
index 000000000000..fb50c3e72d08
--- /dev/null
+++ b/docs/EnvironmentVariables.md
@@ -0,0 +1,14 @@
+---
+id: environment-variables
+title: Environment Variables
+---
+
+Jest sets the following environment variables:
+
+### `NODE_ENV`
+
+Set to `'test'` if it's not already set to something else.
+
+### `JEST_WORKER_ID`
+
+Each worker process is assigned a unique id (index-based that starts with `1`). This is set to `1` for all tests when [`runInBand`](CLI.md#--runinband) is set to true.
diff --git a/website/sidebars.json b/website/sidebars.json
index 3c4cc29d4399..1cb762c601d6 100644
--- a/website/sidebars.json
+++ b/website/sidebars.json
@@ -39,7 +39,8 @@
       "mock-function-api",
       "jest-object",
       "configuration",
-      "cli"
+      "cli",
+      "environment-variables"
     ]
   }
 }
diff --git a/website/versioned_docs/version-22.x/EnvironmentVariables.md b/website/versioned_docs/version-22.x/EnvironmentVariables.md
new file mode 100644
index 000000000000..87ba1381f2e8
--- /dev/null
+++ b/website/versioned_docs/version-22.x/EnvironmentVariables.md
@@ -0,0 +1,15 @@
+---
+id: version-22.x-environment-variables
+title: Environment Variables
+original_id: environment-variables
+---
+
+Jest sets the following environment variables:
+
+### `NODE_ENV`
+
+Set to `'test'` if it's not already set to something else.
+
+### `JEST_WORKER_ID`
+
+Each worker process is assigned a unique id (index-based that starts with `1`). This is set to `1` for all tests when [`runInBand`](CLI.md#--runinband) is set to true.
diff --git a/website/versioned_sidebars/version-22.x-sidebars.json b/website/versioned_sidebars/version-22.x-sidebars.json
index 5519b94c5267..630569168d5f 100644
--- a/website/versioned_sidebars/version-22.x-sidebars.json
+++ b/website/versioned_sidebars/version-22.x-sidebars.json
@@ -33,7 +33,8 @@
       "version-22.x-mock-function-api",
       "version-22.x-jest-object",
       "version-22.x-configuration",
-      "version-22.x-cli"
+      "version-22.x-cli",
+      "version-22.x-environment-variables"
     ]
   }
 }
diff --git a/website/versioned_sidebars/version-23.x-sidebars.json b/website/versioned_sidebars/version-23.x-sidebars.json
index c681767309d2..de96dc37c761 100644
--- a/website/versioned_sidebars/version-23.x-sidebars.json
+++ b/website/versioned_sidebars/version-23.x-sidebars.json
@@ -36,7 +36,8 @@
       "version-23.x-mock-function-api",
       "version-23.x-jest-object",
       "version-23.x-configuration",
-      "version-23.x-cli"
+      "version-23.x-cli",
+      "version-23.x-environment-variables"
     ]
   }
 }
diff --git a/website/versioned_sidebars/version-24.x-sidebars.json b/website/versioned_sidebars/version-24.x-sidebars.json
index b9317eec8d8d..70a7968ade02 100644
--- a/website/versioned_sidebars/version-24.x-sidebars.json
+++ b/website/versioned_sidebars/version-24.x-sidebars.json
@@ -38,7 +38,8 @@
       "version-24.x-mock-function-api",
       "version-24.x-jest-object",
       "version-24.x-configuration",
-      "version-24.x-cli"
+      "version-24.x-cli",
+      "version-24.x-environment-variables"
     ]
   }
 }
diff --git a/website/versioned_sidebars/version-26.0-sidebars.json b/website/versioned_sidebars/version-26.0-sidebars.json
index c69d3ac005d8..d791b145a933 100644
--- a/website/versioned_sidebars/version-26.0-sidebars.json
+++ b/website/versioned_sidebars/version-26.0-sidebars.json
@@ -39,7 +39,8 @@
       "version-26.0-mock-function-api",
       "version-26.0-jest-object",
       "version-26.0-configuration",
-      "version-26.0-cli"
+      "version-26.0-cli",
+      "version-26.0-environment-variables"
     ]
   }
 }